it comes just days after former secretary of state hillary clinton released this new video, supporting gay marriage. >>> and tonight, a well-known architect of republican strategy is making news after weighing in on the issue right here on abc's "this week." i want to bring in rick klein with us. you saw this, too. here's the straightforward answer from karl rove when george asked him this morning. >> karl rove, can you imagine the next republican candidate saying flatout, i'm for gay marriage? >> i could. >> he quickly moved on to another issue right after that. but, rick, rove's team knew this was making headlines. and they reached out to you before we came on the air tonight? >> that's correct. an important distinction that karl rove wants me to make. he sent me an e-mail, while he could see a republican candidate supporting gay marriage, that's not necessarily saying the nominee will do so. but here's the thing. the politics around gay marriage are changing and changing fast. it's been less than a year since president obama himself dropped his opposition to gay marriage in that int